High sensitivity and large scanning range optical antennas enabled by multi-casting ridge-waveguide subwavelength structure arrays
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915473309827072 |
|---|---|
| author | Xu, Weijie Jiang, Xianxian Bao, Yelong Wang, Junjia |
| author_facet | Xu, Weijie Jiang, Xianxian Bao, Yelong Wang, Junjia |
| contents | With the rapid development of large-scale integrated photonics, optical phased array (OPA) is an effective way to realize highly integrated, stable and low-cost beam control system. Achieving a large field of view (FOV) in the longitudinal direction without increasing fabrication cost and system complexity is still a significant challenge in OPA antennas. Here, a high sensitivity and large scanning range antenna based on subwavelength structure array is proposed to enhance the longitudinal scanning and free-space radiating efficiency by using the ridge-waveguide structure and backward-emitting. A millimeter-long grating antenna with a far-field beam divergence of 0.13° and a wavelength sensitivity of 0.237°/nm is experimentally demonstrated. Furthermore, by using different sideband periods, we introduce a multi-casting grating antenna with a large scanning range up to 42.6°. The proposed devices show significant improvement in longitudinal wavelength sensitivity compared with the typical waveguide grating antennas. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_10026 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High sensitivity and large scanning range optical antennas enabled by multi-casting ridge-waveguide subwavelength structure arrays Xu, Weijie Jiang, Xianxian Bao, Yelong Wang, Junjia Optics Applied Physics With the rapid development of large-scale integrated photonics, optical phased array (OPA) is an effective way to realize highly integrated, stable and low-cost beam control system. Achieving a large field of view (FOV) in the longitudinal direction without increasing fabrication cost and system complexity is still a significant challenge in OPA antennas. Here, a high sensitivity and large scanning range antenna based on subwavelength structure array is proposed to enhance the longitudinal scanning and free-space radiating efficiency by using the ridge-waveguide structure and backward-emitting. A millimeter-long grating antenna with a far-field beam divergence of 0.13° and a wavelength sensitivity of 0.237°/nm is experimentally demonstrated. Furthermore, by using different sideband periods, we introduce a multi-casting grating antenna with a large scanning range up to 42.6°. The proposed devices show significant improvement in longitudinal wavelength sensitivity compared with the typical waveguide grating antennas. |
| title | High sensitivity and large scanning range optical antennas enabled by multi-casting ridge-waveguide subwavelength structure arrays |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2403.10026 |